Is there a way too get the mini gun in fort without getting wasted In Grand theft auto 5 story mode as franklin ?. .?

is there a way too get the mini gun in fort without getting wasted In Grand theft auto 5 story mode as franklin ?. .
Update: Fort Zancudo
Update 2: Is there a way to get the minigun in Fort Zancudo (as Franklin) and escape Fort Zancudo without getting wasted ?. .
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